dictionary = {
    '卷心菜':'cabbage','午餐':'lunch','机器人':'robot','天空':'sky','花':'flower'}
print('中英文字典中所有中文词组及其对应的英文单词')
for item in dictionary.items():
    print(item)
print('中英文字典中所有中文词组')
for chinese in dictionary.keys():
    print(chinese,end='')
print('\n中英文字典中所有的英文单词:')
for english in dictionary.values():
    print(english,end='')